# NTSB investigations, 2011: Powerplant sys/comp malf/fail NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB ERA12FA120](https://openairdocs.org/ntsb/ERA12FA120.md): Cessna 441 · Nashville, PA · Accident · 1 fatal · Field investigation · Final report · Dec 22, 2011 · N48BS · Substantial damage > The pilot's failure to maintain minimum control airspeed after a loss of power to the right engine, which resulted in an uncontrollable roll into an inadvertent stall/spin. Contributing to the accident was the failure of the airplane's right engine for… - [NTSB CEN12FA100](https://openairdocs.org/ntsb/CEN12FA100.md): Cessna 421C · Sioux Falls, SD · Accident · 4 fatal · Field investigation · Final report · Dec 9, 2011 · N421SY · Substantial damage > The pilot’s failure to maintain adequate airspeed after shutting down one engine, which resulted in an inadvertent aerodynamic stall and impact with terrain. Contributing to the accident was the pilot’s failure to follow the guidance contained in the pilot’s… - [NTSB CEN12CA035](https://openairdocs.org/ntsb/CEN12CA035.md): Houts Avid Mark IV · Hibbing, MN · Accident · Minor injuries · Data collection · Final report · Oct 21, 2011 · N43280 · Substantial damage > The improper installation of a hose clamp, which resulted in an oil line rupture and subsequent loss of engine oil pressure. - [NTSB CEN12FA025](https://openairdocs.org/ntsb/CEN12FA025.md): Piper PA-28R-200 · Watertown, WI · Accident · No injuries · Field investigation · Final report · Oct 17, 2011 · N300KR · Substantial damage > The separation of the number 2 connecting rod from the crankshaft for reasons that could not be determined during postaccident metallurgical examination, which ultimately resulted in a total loss of engine power. - [NTSB ERA11FA512](https://openairdocs.org/ntsb/ERA11FA512.md): Heronimus Kevin A Glasair III · Falls of Rough, KY · Accident · 1 fatal · Field investigation · Final report · Sep 30, 2011 · N43KH · Substantial damage > The failure of the propeller power speed reduction unit, which resulted in a loss of engine power at low altitude. - [NTSB CEN11LA669](https://openairdocs.org/ntsb/CEN11LA669.md): Owen Vans RV-10 · Marietta, OH · Accident · Serious injuries · Limited investigation · Final report · Sep 27, 2011 · N499RV · Destroyed > The in-flight engine fire and loss of engine power due to an improperly installed fuel injector nozzle during a recent engine overhaul. - [NTSB ERA11IA521](https://openairdocs.org/ntsb/ERA11IA521.md): Beech V35 · New Haven, CT · Incident · No injuries · Incident investigation · Final report · Sep 18, 2011 · N275BM · Minor damage > The in-flight fatigue failure of the engine’s crankshaft, which resulted in the separation of the forward portion of the crankshaft and the propeller. - [NTSB WPR11GA431](https://openairdocs.org/ntsb/WPR11GA431.md): Bell 205 · Tehachapi, CA · Accident · Minor injuries · Final report · Sep 4, 2011 · N205WW · Substantial damage > The pilot's inability to adequately execute an emergency autorotation due to the flight's low altitude during external load operations, which resulted in a hard landing. Contributing to the accident was a torsionally overstressed tachometer shaft, which sent… - [NTSB ERA11LA483](https://openairdocs.org/ntsb/ERA11LA483.md): Durling James RV-6A · Hollywood, FL · Accident · Minor injuries · Limited investigation · Final report · Sep 3, 2011 · N241BD · Substantial damage > Particulate ingestion from the engine, which resulted in the malfunction of the propeller governor during the airplane’s initial climb. - [NTSB WPR11LA423](https://openairdocs.org/ntsb/WPR11LA423.md): Arrow Falcon Exporters UH-1H · Stockton, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 2, 2011 · N205PJ · Substantial damage > A total loss of engine power due to the separation of a tooth from the starter-generator drive gear, which resulted in failure of the engine oil pump and subsequent oil starvation. - [NTSB CEN11LA568](https://openairdocs.org/ntsb/CEN11LA568.md): Quad City Challenger · Granbury, TX · Accident · Serious injuries · Limited investigation · Final report · Aug 16, 2011 · N979JP · Substantial damage > The leak in the plastic connectors in the fuel lines, which resulted in decreased engine power during the initial climb. - [NTSB CEN11LA566](https://openairdocs.org/ntsb/CEN11LA566.md): Air Tractor AT-400 · Nelson, NE · Accident · No injuries · Limited investigation · Final report · Aug 11, 2011 · N3659N · Substantial damage > Failure of the fuel control unit's spool cap bearing for reasons that could not be determined during extensive postaccident examination, and the pilot’s decision to shut the engine down without sufficient altitude and distance to reach the runway. - [NTSB CEN11LA563](https://openairdocs.org/ntsb/CEN11LA563.md): Grumman Acft ENG Cor-Schweizer G-164A · Mansfield, SD · Accident · No injuries · Limited investigation · Final report · Aug 10, 2011 · N127FC · Substantial damage > The loss of engine power due to debris in the engine air intake system. - [NTSB ERA11LA461](https://openairdocs.org/ntsb/ERA11LA461.md): Piper PA-46-310P · Elizabethtown, NC · Accident · No injuries · Limited investigation · Final report · Aug 6, 2011 · N469CC · Substantial damage > The improper securing of a “B” nut on the power turbine control (Py) line by unknown maintenance personnel, which resulted in a total loss of engine power. Contributing to the accident was the pilot's failure to use the manual fuel override switch. - [NTSB CEN11LA491](https://openairdocs.org/ntsb/CEN11LA491.md): Beech C35 · Medina, OH · Accident · No injuries · Limited investigation · Final report · Jul 20, 2011 · N1883D · Substantial damage > The loss of engine power due to fuel starvation due to an age-related failure of the engine-driven fuel pump. Also causal was the failure of the maintenance facility to overhaul the fuel pump and the failure of the operator to ensure that the pump was… - [NTSB CEN11LA464](https://openairdocs.org/ntsb/CEN11LA464.md): Burtner Charles W Derjager D IX · East Liverpool, OH · Accident · Serious injuries · Limited investigation · Final report · Jul 7, 2011 · N7808M · Substantial damage > The pilot's improper landing flare, which resulted in a porpoised landing and propeller contact with the runway, which caused an in-flight disintegration of the propeller during the go-around, and subsequent collision with trees. - [NTSB WPR11LA311](https://openairdocs.org/ntsb/WPR11LA311.md): Cessna R182 · Hesperia, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 2011 · N7392X · Substantial damage > The separation of the end baffle cone inside the muffler, which blocked airflow through the engine after takeoff and resulted in a loss of engine power and an off-airport landing into obstacles. - [NTSB CEN11LA460](https://openairdocs.org/ntsb/CEN11LA460.md): Ayres S2R600 · Pine Bluff, AR · Accident · No injuries · Limited investigation · Final report · Jul 6, 2011 · N3101S · Substantial damage > The use of an incorrect mounting bolt by maintenance persons to attach the engine torque sensor, which resulted in an internal failure of the torque sensor and subsequent loss of engine power due to fuel starvation. - [NTSB ERA11LA379](https://openairdocs.org/ntsb/ERA11LA379.md): Piper J3C-65 · Egremont, MA · Accident · Minor injuries · Limited investigation · Final report · Jul 5, 2011 · N98550 · Substantial damage > A partial loss of engine power due to the No. 4 intake and exhaust valves becoming lodged in the valve guides, which resulted from a lack of use, improper engine storage preparation, and improper return to service from indefinite storage. - [NTSB ERA11LA383](https://openairdocs.org/ntsb/ERA11LA383.md): Cessna 150L · Plymouth, MA · Accident · No injuries · Limited investigation · Final report · Jul 4, 2011 · N150ET · Substantial damage > A partial loss of engine power during initial climb due to a stuck cylinder valve, which resulted from excessive corrosion and carbon deposits on the valve springs due to inadequate maintenance. - [NTSB WPR11LA290](https://openairdocs.org/ntsb/WPR11LA290.md): Christen Industries Pitts S-1T · Alkali Lake, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 2011 · N77MN · Substantial damage > The loss of engine oil during cruise flight due to the failure of the front bearing oil seal. - [NTSB ENG11IA035](https://openairdocs.org/ntsb/ENG11IA035.md): Boeing 757-232 · Atlanta, GA · Incident · Minor injuries · Incident investigation · Final report · Jun 21, 2011 · N6714Q · No damage > Fuel leaking from the fuel flow transmitter that ignited on contact with the engine’s hot cases which resulted in an engine undercowl fire. The fuel leak resulted from the fuel flow transmitter end housing backing off from the main housing, creating a gap… - [NTSB CEN11LA413](https://openairdocs.org/ntsb/CEN11LA413.md): Cessna 172N · Bedford Park, IL · Accident · No injuries · Limited investigation · Final report · Jun 18, 2011 · N172NT · Substantial damage > A loss of engine power due to a fractured push rod precipitated by a stuck exhaust valve. - [NTSB CEN11LA404](https://openairdocs.org/ntsb/CEN11LA404.md): Ayres S2R-T34 · Athleimer, AR · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 2011 · N30902 · Substantial damage > Failure of the first stage planetary gearset in the propeller reduction gearbox, which resulted in catastrophic engine failure. Contributing to the failure was the misrepresentation of the gearset being zero-timed by the company that sold the gearset to the… - [NTSB CEN11LA367](https://openairdocs.org/ntsb/CEN11LA367.md): Jones Cozy Mark IV · Sioux City, IA · Accident · Minor injuries · Limited investigation · Final report · May 30, 2011 · N204TJ · Substantial damage > The pilot's improper installation of the gascolator gasket during the airplane's last condition inspection, which resulted in a partial loss of engine power while maneuvering. - [NTSB CEN11LA370](https://openairdocs.org/ntsb/CEN11LA370.md): Bell 47G-3B-1 · Lakeville, MN · Accident · Serious injuries · Limited investigation · Final report · May 25, 2011 · N96SH · Substantial damage > The loss of engine power due to a loose B-nut on the compressor discharge pressure bleed line. - [NTSB ERA11FA233](https://openairdocs.org/ntsb/ERA11FA233.md): Cessna 402B · Biddeford, ME · Accident · 1 fatal · Field investigation · Final report · Apr 10, 2011 · N402RC · Substantial damage > The pilot did not maintain minimum controllable airspeed while on final approach with a partial loss of power in the right engine, which resulted in a loss of control. Contributing to the accident was the partial loss of engine power in the right engine due… - [NTSB ERA11LA216](https://openairdocs.org/ntsb/ERA11LA216.md): Hiller UH-12E · Culpeper, VA · Accident · No injuries · Limited investigation · Final report · Mar 25, 2011 · N4033P · Substantial damage > Mechanical failure of the transmission for reasons that could not be determined because the transmission could not be torn down. - [NTSB ERA11LA204](https://openairdocs.org/ntsb/ERA11LA204.md): Robinson R22 · Goshen, NY · Accident · No injuries · Limited investigation · Final report · Mar 22, 2011 · N259TW · Substantial damage > The pilot’s failure to adhere to published preflight checklist limitations and procedures, resulting in excessive slack and subsequent failure of the power transmission belts and a total loss of rotor system drive. - [NTSB ENG11IA021](https://openairdocs.org/ntsb/ENG11IA021.md): Bombardier DHC 8 402 · Pittsburgh, PA · Incident · No injuries · Incident investigation · Final report · Mar 17, 2011 · N339NG · Minor damage > the flight crew's delay in shutting down the left engine following an engine oil pressure master warning, which led to a hard rub inside the engine that served as an ignition point for a titanium fire. Contributing to the event was a PW150 No. 5 seal design… - [NTSB WPR11LA167](https://openairdocs.org/ntsb/WPR11LA167.md): Rotorway A600 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Mar 15, 2011 · N602RW · Substantial damage > A design modification that changed the fasteners and components used to attach the main rotor drive pulley to the engine, which resulted in fatigue failure of those fasteners and a complete loss of power to the main rotor. - [NTSB CEN11FA227](https://openairdocs.org/ntsb/CEN11FA227.md): Lancair LC41-550FG · Carbondale, IL · Accident · No injuries · Field investigation · Final report · Mar 11, 2011 · N521RT · Substantial damage > The fatigue fracture and subsequent failure of the No. 2 cylinder exhaust valve during cruise flight, which resulted in a total loss of engine power. - [NTSB CEN11FA202](https://openairdocs.org/ntsb/CEN11FA202.md): Cessna T210M · Independence, MO · Accident · Minor injuries · Field investigation · Final report · Feb 24, 2011 · N6149B · Substantial damage > Latent dimensional discrepancies related to the engine crankcase main bearing saddle bores, which precipitated the fatigue failure of the crankshaft and a complete loss of engine power. Contributing to the accident was the engine manufacturer's failure to… - [NTSB CEN11LA177](https://openairdocs.org/ntsb/CEN11LA177.md): Piper PA-16 · Lake Koshkonong, WI · Accident · Minor injuries · Limited investigation · Final report · Feb 5, 2011 · N5945H · Substantial damage > A loss of engine power for undetermined reasons during a low-altitude pass over a frozen lake. - [NTSB ERA11LA130](https://openairdocs.org/ntsb/ERA11LA130.md): Cirrus Design SR22 · Cross City, FL · Accident · No injuries · Limited investigation · Final report · Jan 28, 2011 · N8135B · Substantial damage > A total loss of engine power resulting from the failure of the camshaft due to fatigue cracks. Contributing to the accident was the inadequate quality inspection of the camshaft after initial manufacture. - [NTSB WPR11LA102](https://openairdocs.org/ntsb/WPR11LA102.md): Piper PA-28-235 · San Luis Obispo, CA · Accident · No injuries · Limited investigation · Final report · Jan 20, 2011 · N8608W · Substantial damage > The loss of engine power due to the fatigue fracture of one attachment bolt for the left idler gear shaft, which resulted from an insufficient preload on both attachment bolts. - [NTSB ERA11LA117](https://openairdocs.org/ntsb/ERA11LA117.md): Convair 340-71 · Charlotte Amalie · Accident · No injuries · Limited investigation · Final report · Jan 17, 2011 · N8277Q · Substantial damage > The captain’s decision to continue the flight with the left engine backfiring, resulting in an engine fire shortly after takeoff. Contributing to the accident were the captain’s decision to continue the flight following a report of black smoke trailing the… ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE year(c."eventDate") = 2011 AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '340' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-events/340/sequence?year=2011 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.